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Lepton flavor violating Higgs boson decays, tau --> mu gamma, B(s) --> mu+mu- and theta(13) in the constrained MSSM with Massive Neutrinos and large tan beta | | J. K. Parry
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24 Oct 2005 | | Affiliation: | KAIST, Taejon | | Abstract: | Realistic predictions are made for the rates of lepton flavour violating Higgs boson decays, tau --> mu gamma, mu --> e gamma, B(s) --> mu+mu-, B(s) --> tau mu, tau --> 3 mu and theta(13), via a top-down analysis of the Minimal Supersymmetric Standard Model(MSSM) constrained by SU(5) unification with right-handed Neutrinos and large tan beta. The third family neutrino Yukawa coupling is chosen to be of order 1, in this way our model bares a significant resemblance to supersymmetric SO(10). In this framework the large PMNS mixings result in potentially large lepton flavour violation. Our analysis predicts tau --> mu gamma and mu --> e gamma rates in the region (10e-8 - 10e-6) and (10e-15 - 10e-14) respectively. We also show that the rates for lepton flavour violating Higgs decays can be as large as 10e-7. The non-decoupling nature of H --> tau mu is observed which leads to its decay rate becoming comparable to that for tau --> mu gamma for large values of m0 and M1/2. We also find that the present bound on B(s) --> mu+mu- is an important constraint on the rate of lepton flavour violating Higgs decays. Our numerical analysis also predicts the final unmeasured neutrino mixing angle to be, sin theta(13) = (0.003-0.008). | | Source: | arXiv, hep-ph/0510305 | | Services: | Forum | Review | PDF | Favorites | |
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